Method of and apparatus for pounding shoes



April 9, 1940. s, ,J N 2,196,204

METHOD OF AND APPARATUS FOR POUNDING SHOES Filed 001;. 21, 1957 l l l l l I I I I 1 I l l L I \l Patented Apr. 9, 1940 UNITED STATES METHOD OF AND APPARATUS POUNDING SHOES Sidney J. Finn, Beverly, Mass, assignor to Unitedv Shoe Machinery Corporation, "Borough of Flemington, N. l, a corporation of New Jersey Application October 21, 1937, Serial :No. 170,249 6 Claims. (01.12 672) This invention relates to a method of and apparatus for pounding shoe bottoms and is herein illustrated in connection with the beating out.

p of the welts and inseams of the bottoms of shoes prior'to the attachment of soles. In the manufacture of welt shoes in which-the soles are to be attached by means of cement it is customary after the inseam trimming operation to beat-out the welt and inseam in order that the sole can be fitted closely to the bottom of the shoe. The materials of the inseam, being composed of layers extending substantially normal to the shoe bottom, form a stifi ridge which is diihcult to flatten out by methods heretofore employed. Furthermore, the inseam materials resist the penetration of the cement applied to the shoe bottom with the result that it is sometimes diflicult to obtain a good bond between the inseam materials and sole when the latter is secured thereto.

In view of the foregoing, it is an object of the invention to provide an improved method of treating the bottoms of shoes preparatory to the sole attaching operation by which the difliculties abovementioned are eliminated. To this end and as illustrated, my novel method consists in simultaneously beating out the welt and inseam materials of a shoe bottom and, at the same time, breaking up inseam materials, thereby flattening the welt and inseam so that a sole to be attached can readily be made to conform closely to the shoe bottom and the inseam materials will be conditioned so that cement can readily penetrate them to form a satisfactory bond between the inseam'materials and the sole. In another aspect the invention provides a machine for carrying out themethod above set forth which, as shown, comprises an oscillating hammer for beating the welt and an auxiliary hammer for beating the inseam materials, the two hammers being operable simultaneously. Preferably and as shown, the auxiliary hammer is provided with a working face having a plurality of projections which operate to break up the inseam materials. The construction just described, is advantageous in that the welt and inseam materials are beaten out in a single operation and the inseam materials are broken up in such manner that cement can readily penetrate the materials. The invention in these and other aspects is disclosed in the accompanying drawing, described in the following detailed specification, and pointed out in the claims.

In the drawing,

Fig. 1 is a view in side elevation of a pounding machine constructedin accordance with one embodimentof my invention; 1 p

Fig. 2 is a plan view of the forward portion of the machine illustrating; hammer operating mechanism; p

Fig. 3 is a cross section on an enlargedscale through the hammers taken along line IlL-III ofFig.1; and x r Fig. 4 is a perspective view illustrating operation of the hammers upon the work. l

As shown in Fig. 1, the machine for carrying out my method preferably comprises a frame i0 having a work support; l2,a hammer I4 arranged to be reciprocated heightwise of the work support to beat out a welt such as welt iBof a shoe l8, togetherwith an'auxiliary hammer 20 recipro' cable with the hammer M for beating-the inseam materials 22 of the shoe l8. vThe hammer I4: is carried at the lower end of a plunger. which is slidably mounted ina boss 26 located in the end of a rocking member 28 pivoted at 30 and arranged to be driven by means, drive shaft 34.

The hammer Mis pressed downwardly by a spring 36 which surrounds the plunger 24 and engages at one end an abutment 38 on the plunger and at the other end a portion of a hollow sleeve to threaded into the boss 26. Downward movement of the hammer is limited by. nuts 42 positioned at the upper endof the plunger 24, the tension of the spring being adjustable'by a nut 44 located at the upper end of the sleeve 40. Rotation of the hammer I 4 is prevented by means of a key 46 in the side of the plunger and making engagement with a slot in the boss.

The auxiliary hammer 26 is mounted in a bracket 48 which comprises a plate which rests upon the'upperportion of the boss 26 and surrounds the sleeve 40. The bracket 48' has depending ears 50 positioned upon opposite sides of the rocking member 28 and isheld against angular movement by screw bolts'SZ extending through the depending members and engaging opposite sides: of the rocking member. The bracket 48 is mounted for movement with the rocking member 28 as it is oscillated, being secured thereto in a heightwise direction by a nut 54 on the sleeve 40; The bracket 48 at its forward end carries a depending sleeve 56 in which is mounted a plunger 58 at the lower end of which is carried the auxiliary hammer 20. The plunger 58 is yieldingly mounted in the sleeve being pressed downwardly by means of a spring 60, downward movement being limited by nuts 62 at the upper end of the plunger.

of an eccentric 32 on a Mechanism is provided whereby the auxiliary hammer may be rendered inoperative as when work is to be done upon the welts of shoes the soles of which are to be attached by stitches in which case it is not necessary to operate upon the inseams of the shoes. The mechanism for doing this comprises a collar 65 surrounding the plunger 58 and normally resting upon the upper surface of the bracket 48. The under portion of the collar 64 is cut away at one side to form an inclined face 66 adapted to be engaged by a cam 68 carried by a plate 10. surrounding the sleeve MB and resting upon the upper face of the. bracket 48. The plate 10 has a handle 12 by which the plate can be rotated. to move the cam 68 beneath the inclined face 66 thereby forcing the collar 64 upwardly against the lower of the nuts 62 raising the plunger 58, against the action of the spring 60, to move the hammer into a position in which it cannot engage the work. Movement of the handle in opposite directions is limited by pins 14 secured to the bracket 48.

The hammer 26 is provided with an ofiset portion 16 which extends into a vertical slot 18 of the hammer M, the construction being such that the auxiliary hammer may be moved heightwise of the main hammer l4 and locked into inoperative position by means of the cam 68.

The under surface of the hammer 20 is provided with sharp corrugations 80 which are operable when the auxiliary hammer is operating to break up the edge portions of the inseam materials and to form depressions in the welt at the same time that the beating operation is taking place.

The machine is provided with a slashing knife 82 of usual construction for slashing the toe portion of the welt.

In the operation of the machine a shoe is presented bottom up to the work rest 12 with the forward portion of the work rest entering the welt crease of the shoe and as the racking member 28 is oscillated the hammers l4 and 20 deliver a succession of blows to the welt and inseam materials as the shoe is advanced along the A Work support. The auxiliary hammer 20 is particularly eifective in beating out the materials of the inseam 22 as well as breaking them up for the purpose of providing a surface adapted to receive cement. It is to be noted that the breaking up of the inseam materials by the corrugations 80 facilitates the cementing operation by reason of the fact that the cement can penetrate below the surface of the materials of the inseam, thus contributing to a strong bond.

I contemplate, in some instances, applying a coating of cement, such as pyroxylin cement, to

the shoe bottom prior to the pounding operation. After the cement is dried the pounding operation is performed in the usual manner with the result that the cement is broken up and forced to some extent into the surface layers of the shoe bottom so that when solvent is applied to the cement immediately prior to the sole attaching operation the cement will be caused rapidly and thoroughly to penetrate below the surface of the various parts.

It is to be noted that upon operation of the handle 12 the auxiliary hammer 28 may be raised out of operative position when it is desired to operate upon the welt alone by means of the hammer l4.

Having described my invention, what I claim as new and desire to secure by Letters Patent of the United States is:

1. A shoe pounding machine comprising a work support constructed and arranged to enter the welt crease of a shoe, an oscillating lever, a hammer yieldably mounted upon the lever and constructed and arranged to beat the welt of a shoe in engagement with the support, a second hammer yieldably mounted upon the lever adjacent to the first-mentioned hammer and constructed and arranged to beat the inseam materials of the shoe.

2. A welt beating machine comprising a fixed work support adapted to enter the welt crease of a shoe, an oscillating member, a hammer carried by the member constructed and arranged to beat the welt of a shoe in engagement with the support, and an auxiliary hammer independently mounted upon the said member adjacent to the first-mentioned hammer and constructed and arranged to beat the welt inseam materials of the shoe. 1

3. A welt beating machine comprising a work support adapted to enter the welt crease of a shoe, an oscillating member, a plurality of hammers carried by said member and constructed and arranged to beat out the welt and the inseam materials of a shoe in engagement with the support, and means for moving one of the hammers relatively to the other into a position in which it will be inoperative to engage the shoe.

4. A machine for operating upon shoes comprising a work support, a hammer mounted for oscillation relatively to the, support for beating the welt of a shoe, an auxiliary hammer mounted for movement with the first-mentioned harnmer for beating the inseam materials of the shoe, and a manually operable cam for rendering the auxiliary hammer inoperative relatively to the shoe.

5. A method of preparing shoes for the attachment of soles by means of cement which comprises beating out the welt and the inseam materials of the shoe and simultaneously with the beating out operation breaki lg up the materials of the inseam thereby to condition the materials for the reception of cement.

6. A method of preparing welt shoes for the attachment of soles by means of cement which comprises beating out the welt of the shoe and simultaneously with the beating out of the welt breaking up and beating out the inseam materials thereof.

SIDNEY J FINN. 

